Experiment: List prefetching + spinner

[olemartinorg]

Description

🚧

Related Issue(s)

• https://digdir-samarbeid.slack.com/archives/C02EJ9HKQA3/p1777017115780939

Verification/QA

• Manual functionality testing
  • I have tested these changes manually
  • Creator of the original issue (or service owner) has been contacted for manual testing (or will be contacted when released in alpha)
  • No testing done/necessary
• Automated tests
  • Unit test(s) have been added/updated
  • Cypress E2E test(s) have been added/updated
  • No automatic tests are needed here (no functional changes/additions)
  • I want someone to help me make some tests
• UU/WCAG (follow these guidelines until we have our own)
  • I have tested with a screen reader/keyboard navigation/automated wcag validator
  • No testing done/necessary (no DOM/visual changes)
  • I want someone to help me perform accessibility testing
• User documentation @ altinn-studio-docs
  • Has been added/updated
  • No functionality has been changed/added, so no documentation is needed
  • I will do that later/have created an issue
• Support in Altinn Studio
  • Issue(s) created for support in Studio
  • This change/feature does not require any changes to Altinn Studio
• Sprint board
  • The original issue (or this PR itself) has been added to the Team Apps project and to the current sprint board
  • I don't have permissions to do that, please help me out
• Labels
  • I have added a kind/* and backport* label to this PR for proper release notes grouping
  • I don't have permissions to add labels, please help me out

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: fc1d8217-4cf3-4bce-af69-f8486443abf8

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch experiment/list-prefetch

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[olemartinorg]

/publish

[github-actions]

PR release:

• <link rel="stylesheet" type="text/css" href="https://altinncdn.no/toolkits/altinn-app-frontend/4.28.0-pr.4770.list-prefetch.02d6a7d6/altinn-app-frontend.css">
• <script src="https://altinncdn.no/toolkits/altinn-app-frontend/4.28.0-pr.4770.list-prefetch.02d6a7d6/altinn-app-frontend.js"></script>

⚙️ Building...
✅ Done!